Windows build: Add an "uninstall" target

CMakeLists.txt

@@ -955,3 +955,8 @@ install(FILES ${CMAKE_SOURCE_DIR}/README.ijg ${CMAKE_SOURCE_DIR}/README.md
 install(FILES ${CMAKE_BINARY_DIR}/jconfig.h ${CMAKE_SOURCE_DIR}/jerror.h
   ${CMAKE_SOURCE_DIR}/jmorecfg.h ${CMAKE_SOURCE_DIR}/jpeglib.h
   DESTINATION include)
+
+configure_file("${CMAKE_SOURCE_DIR}/cmakescripts/cmake_uninstall.cmake.in"
+  "cmake_uninstall.cmake" IMMEDIATE @ONLY)
+
+add_custom_target(uninstall COMMAND ${CMAKE_COMMAND} -P cmake_uninstall.cmake)

cmakescripts/cmake_uninstall.cmake.in

@@ -0,0 +1,24 @@
+# This code is from the CMake FAQ
+
+if (NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+  message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")
+endif(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+
+file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+list(REVERSE files)
+foreach (file ${files})
+  message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
+    if (EXISTS "$ENV{DESTDIR}${file}")
+      execute_process(
+        COMMAND "@CMAKE_COMMAND@" -E remove "$ENV{DESTDIR}${file}"
+        OUTPUT_VARIABLE rm_out
+        RESULT_VARIABLE rm_retval
+      )
+    if(NOT ${rm_retval} EQUAL 0)
+      message(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
+    endif (NOT ${rm_retval} EQUAL 0)
+  else (EXISTS "$ENV{DESTDIR}${file}")
+    message(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
+  endif (EXISTS "$ENV{DESTDIR}${file}")
+endforeach(file)